.excel-analyzer-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.excel-analyzer-container.frontend {
    background: #f9f9f9;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="file"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#analysis-results {
    margin-top: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 5px;
}

.result-item {
    margin-bottom: 15px;
    padding: 15px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 4px;
}

.result-item h3 {
    margin: 0 0 10px 0;
    color: #23282d;
}

.result-item .topic-list,
.result-item .link-list {
    margin: 10px 0;
    padding-left: 20px;
}

.result-item .topic-list li,
.result-item .link-list li {
    margin-bottom: 5px;
}

.loading {
    text-align: center;
    padding: 20px;
    display: none;
}

.loading:after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Frontend specific styles */
.excel-analyzer-container.frontend .button-primary {
    background: #0073aa;
    border-color: #006291;
    color: #fff;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.excel-analyzer-container.frontend .button-primary:hover {
    background: #006291;
}

.excel-analyzer-container.frontend h2 {
    color: #23282d;
    margin: 20px 0;
}

.excel-analyzer-container.frontend .result-item {
    background: #fff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.excel-analyzer-container.frontend .result-item h3 {
    color: #0073aa;
}

.excel-analyzer-container.frontend .result-item h4 {
    color: #23282d;
    margin: 15px 0 10px;
}

.excel-analyzer-container.frontend .link-list a {
    color: #0073aa;
    text-decoration: none;
}

.excel-analyzer-container.frontend .link-list a:hover {
    text-decoration: underline;
}